Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/3664
Título: | Anaerobic digestion of coffee waste |
Autor(es): | Neves, L. Ribeiro, R. Oliveira, Rosário Alves, M. M. |
Palavras-chave: | Alkaline hydrolysis pre-treatment Biogas Hydrolysis rate constant Instant coffee substitutes Kitchen waste |
Data: | 2005 |
Citação: | INTERNATIONAL IWA SYMPOSIUM ON ANAEROBIC DIGESTION OF SOLID WASTE, 4, Copenhagen, 2005 - "Proceedings Fourth International IWA Symposium on Anaerobic Digestion of Solid Waste". Copenhagen : Technical University of Denmark, 2005. vol 1, p. 527-534. |
Resumo(s): | The anaerobic co-digestion of five different by-products from instant coffee substitutes production was studied in mesophilic conditions. The co-substrate was the excess of sewage sludge from the wastewater treatment plant located in the same coffee factory. Four of the tested wastes produced methane in the range of 0.24-0.28 m³CH4(STP)/kgVSinitial . Reduction of 50-73% in total solids and 75-80% in volatile solids were obtained and the hydrolysis rate constants were in the range of 0.035-0.063 dֿ¹. After 40 days, one waste, composed of 100% barley, achieved a methane yield as low as 0.02 m³CH4(STP)/kgVSinitial and 31% and 40% total and volatile solids reduction, respectively,. Two different strategies were applied to enhance the biodegradability of this waste. An alkaline hydrolysis pre-treatment, that increased the methane production up to 0,22 m³CH4(STP)/kgVSinitial and the total and volatile solids reductions up to 67 and 84%, respectively. A co-digestion with kitchen waste, that increased the methane production up to 0,36 m³CH4(STP)/kgVSinitial and the total and volatile solids reductions up to 61 and 67%, respectively. |
Tipo: | Artigo em ata de conferência |
URI: | https://hdl.handle.net/1822/3664 |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: | CEB - Artigos em Livros de Atas / Papers in Proceedings |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
---|---|---|---|---|
Anaerobic Digestion of Coffee waste-adsw-ab-121[1].pdf | 229,16 kB | Adobe PDF | Ver/Abrir |